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Alidade
Graduations-On one edge of bar "YARDS" 0-1000 "2 INCHES TO 1 MILE", the other edge 0-12 "INCHES 10THS & 50THS".
Sights-Two hinged sight vanes 3.25" (8.2cm) long. One sight vane has a vertical slit, the other has a rectangular aperture with a thread. Both sights connected by a piece of string.
In a leather case.
Sights-Two hinged sight vanes 3.25" (8.2cm) long. One sight vane has a vertical slit, the other has a rectangular aperture with a thread. Both sights connected by a piece of string.
In a leather case.
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Object Details
| ID: | NAV1363 |
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| Type: | Alidade |
| Display location: | Not on display |
| Creator: | Henry Hughes & Son Limited |
| Date made: | 1915 |
| Credit: | National Maritime Museum, Greenwich, London |
| Measurements: | Overall: 15 mm x 405 mm x 45 mm |
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